No, Kimba came first, and it has almost the exact same story. Several scenes were literally lifted frame by frame out of Kimba. Several of the voice actors were under the impression that they were doing a Kimba remake. They were actually shown scenes from Kimba while it was in development. Then the executives at Disney decided to suddenly change their story and claim "oh we never heard of Kimba before, this is totally original". Yeah right.
http://hubpages.com/entertainment/TH...the-White-Lion